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source: trunk/template-common/lib/ui/ui.datepicker.js @ 4918

Last change on this file since 4918 was 4918, checked in by nikrou, 14 years ago

Feature 1442 : update jquery

update jquery to 1.4.1
update jquery ui to 1.7.2

Property svn:eol-style set to LF

File size: 68.2 KB

Line
1	/*
2	* jQuery UI Datepicker 1.7.2
3	*
4	* Copyright (c) 2009 AUTHORS.txt (http://jqueryui.com/about)
5	* Dual licensed under the MIT (MIT-LICENSE.txt)
6	* and GPL (GPL-LICENSE.txt) licenses.
7	*
8	* http://docs.jquery.com/UI/Datepicker
9	*
10	* Depends:
11	* ui.core.js
12	*/
13
14	(function($) { // hide the namespace
15
16	$.extend($.ui, { datepicker: { version: "1.7.2" } });
17
18	var PROP_NAME = 'datepicker';
19
20	/* Date picker manager.
21	Use the singleton instance of this class, $.datepicker, to interact with the date picker.
22	Settings for (groups of) date pickers are maintained in an instance object,
23	allowing multiple different settings on the same page. */
24
25	function Datepicker() {
26	this.debug = false; // Change this to true to start debugging
27	this._curInst = null; // The current instance in use
28	this._keyEvent = false; // If the last event was a key event
29	this._disabledInputs = []; // List of date picker inputs that have been disabled
30	this._datepickerShowing = false; // True if the popup picker is showing , false if not
31	this._inDialog = false; // True if showing within a "dialog", false if not
32	this._mainDivId = 'ui-datepicker-div'; // The ID of the main datepicker division
33	this._inlineClass = 'ui-datepicker-inline'; // The name of the inline marker class
34	this._appendClass = 'ui-datepicker-append'; // The name of the append marker class
35	this._triggerClass = 'ui-datepicker-trigger'; // The name of the trigger marker class
36	this._dialogClass = 'ui-datepicker-dialog'; // The name of the dialog marker class
37	this._disableClass = 'ui-datepicker-disabled'; // The name of the disabled covering marker class
38	this._unselectableClass = 'ui-datepicker-unselectable'; // The name of the unselectable cell marker class
39	this._currentClass = 'ui-datepicker-current-day'; // The name of the current day marker class
40	this._dayOverClass = 'ui-datepicker-days-cell-over'; // The name of the day hover marker class
41	this.regional = []; // Available regional settings, indexed by language code
42	this.regional[''] = { // Default regional settings
43	closeText: 'Done', // Display text for close link
44	prevText: 'Prev', // Display text for previous month link
45	nextText: 'Next', // Display text for next month link
46	currentText: 'Today', // Display text for current month link
47	monthNames: ['January','February','March','April','May','June',
48	'July','August','September','October','November','December'], // Names of months for drop-down and formatting
49	monthNamesShort: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'], // For formatting
50	dayNames: ['Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'], // For formatting
51	dayNamesShort: ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'], // For formatting
52	dayNamesMin: ['Su','Mo','Tu','We','Th','Fr','Sa'], // Column headings for days starting at Sunday
53	dateFormat: 'mm/dd/yy', // See format options on parseDate
54	firstDay: 0, // The first day of the week, Sun = 0, Mon = 1, ...
55	isRTL: false // True if right-to-left language, false if left-to-right
56	};
57	this._defaults = { // Global defaults for all the date picker instances
58	showOn: 'focus', // 'focus' for popup on focus,
59	// 'button' for trigger button, or 'both' for either
60	showAnim: 'show', // Name of jQuery animation for popup
61	showOptions: {}, // Options for enhanced animations
62	defaultDate: null, // Used when field is blank: actual date,
63	// +/-number for offset from today, null for today
64	appendText: '', // Display text following the input box, e.g. showing the format
65	buttonText: '...', // Text for trigger button
66	buttonImage: '', // URL for trigger button image
67	buttonImageOnly: false, // True if the image appears alone, false if it appears on a button
68	hideIfNoPrevNext: false, // True to hide next/previous month links
69	// if not applicable, false to just disable them
70	navigationAsDateFormat: false, // True if date formatting applied to prev/today/next links
71	gotoCurrent: false, // True if today link goes back to current selection instead
72	changeMonth: false, // True if month can be selected directly, false if only prev/next
73	changeYear: false, // True if year can be selected directly, false if only prev/next
74	showMonthAfterYear: false, // True if the year select precedes month, false for month then year
75	yearRange: '-10:+10', // Range of years to display in drop-down,
76	// either relative to current year (-nn:+nn) or absolute (nnnn:nnnn)
77	showOtherMonths: false, // True to show dates in other months, false to leave blank
78	calculateWeek: this.iso8601Week, // How to calculate the week of the year,
79	// takes a Date and returns the number of the week for it
80	shortYearCutoff: '+10', // Short year values < this are in the current century,
81	// > this are in the previous century,
82	// string value starting with '+' for current year + value
83	minDate: null, // The earliest selectable date, or null for no limit
84	maxDate: null, // The latest selectable date, or null for no limit
85	duration: 'normal', // Duration of display/closure
86	beforeShowDay: null, // Function that takes a date and returns an array with
87	// [0] = true if selectable, false if not, [1] = custom CSS class name(s) or '',
88	// [2] = cell title (optional), e.g. $.datepicker.noWeekends
89	beforeShow: null, // Function that takes an input field and
90	// returns a set of custom settings for the date picker
91	onSelect: null, // Define a callback function when a date is selected
92	onChangeMonthYear: null, // Define a callback function when the month or year is changed
93	onClose: null, // Define a callback function when the datepicker is closed
94	numberOfMonths: 1, // Number of months to show at a time
95	showCurrentAtPos: 0, // The position in multipe months at which to show the current month (starting at 0)
96	stepMonths: 1, // Number of months to step back/forward
97	stepBigMonths: 12, // Number of months to step back/forward for the big links
98	altField: '', // Selector for an alternate field to store selected dates into
99	altFormat: '', // The date format to use for the alternate field
100	constrainInput: true, // The input is constrained by the current date format
101	showButtonPanel: false // True to show button panel, false to not show it
102	};
103	$.extend(this._defaults, this.regional['']);
104	this.dpDiv = $('<div id="' + this._mainDivId + '" class="ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all ui-helper-hidden-accessible"></div>');
105	}
106
107	$.extend(Datepicker.prototype, {
108	/* Class name added to elements to indicate already configured with a date picker. */
109	markerClassName: 'hasDatepicker',
110
111	/* Debug logging (if enabled). */
112	log: function () {
113	if (this.debug)
114	console.log.apply('', arguments);
115	},
116
117	/* Override the default settings for all instances of the date picker.
118	@param settings object - the new settings to use as defaults (anonymous object)
119	@return the manager object */
120	setDefaults: function(settings) {
121	extendRemove(this._defaults, settings \|\| {});
122	return this;
123	},
124
125	/* Attach the date picker to a jQuery selection.
126	@param target element - the target input field or division or span
127	@param settings object - the new settings to use for this date picker instance (anonymous) */
128	_attachDatepicker: function(target, settings) {
129	// check for settings on the control itself - in namespace 'date:'
130	var inlineSettings = null;
131	for (var attrName in this._defaults) {
132	var attrValue = target.getAttribute('date:' + attrName);
133	if (attrValue) {
134	inlineSettings = inlineSettings \|\| {};
135	try {
136	inlineSettings[attrName] = eval(attrValue);
137	} catch (err) {
138	inlineSettings[attrName] = attrValue;
139	}
140	}
141	}
142	var nodeName = target.nodeName.toLowerCase();
143	var inline = (nodeName == 'div' \|\| nodeName == 'span');
144	if (!target.id)
145	target.id = 'dp' + (++this.uuid);
146	var inst = this._newInst($(target), inline);
147	inst.settings = $.extend({}, settings \|\| {}, inlineSettings \|\| {});
148	if (nodeName == 'input') {
149	this._connectDatepicker(target, inst);
150	} else if (inline) {
151	this._inlineDatepicker(target, inst);
152	}
153	},
154
155	/* Create a new instance object. */
156	_newInst: function(target, inline) {
157	var id = target[0].id.replace(/([:\[\]\.])/g, '\\\\$1'); // escape jQuery meta chars
158	return {id: id, input: target, // associated target
159	selectedDay: 0, selectedMonth: 0, selectedYear: 0, // current selection
160	drawMonth: 0, drawYear: 0, // month being drawn
161	inline: inline, // is datepicker inline or not
162	dpDiv: (!inline ? this.dpDiv : // presentation div
163	$('<div class="' + this._inlineClass + ' ui-datepicker ui-widget ui-widget-content ui-helper-clearfix ui-corner-all"></div>'))};
164	},
165
166	/* Attach the date picker to an input field. */
167	_connectDatepicker: function(target, inst) {
168	var input = $(target);
169	inst.append = $([]);
170	inst.trigger = $([]);
171	if (input.hasClass(this.markerClassName))
172	return;
173	var appendText = this._get(inst, 'appendText');
174	var isRTL = this._get(inst, 'isRTL');
175	if (appendText) {
176	inst.append = $('<span class="' + this._appendClass + '">' + appendText + '</span>');
177	input[isRTL ? 'before' : 'after'](inst.append);
178	}
179	var showOn = this._get(inst, 'showOn');
180	if (showOn == 'focus' \|\| showOn == 'both') // pop-up date picker when in the marked field
181	input.focus(this._showDatepicker);
182	if (showOn == 'button' \|\| showOn == 'both') { // pop-up date picker when button clicked
183	var buttonText = this._get(inst, 'buttonText');
184	var buttonImage = this._get(inst, 'buttonImage');
185	inst.trigger = $(this._get(inst, 'buttonImageOnly') ?
186	$('<img/>').addClass(this._triggerClass).
187	attr({ src: buttonImage, alt: buttonText, title: buttonText }) :
188	$('<button type="button"></button>').addClass(this._triggerClass).
189	html(buttonImage == '' ? buttonText : $('<img/>').attr(
190	{ src:buttonImage, alt:buttonText, title:buttonText })));
191	input[isRTL ? 'before' : 'after'](inst.trigger);
192	inst.trigger.click(function() {
193	if ($.datepicker._datepickerShowing && $.datepicker._lastInput == target)
194	$.datepicker._hideDatepicker();
195	else
196	$.datepicker._showDatepicker(target);
197	return false;
198	});
199	}
200	input.addClass(this.markerClassName).keydown(this._doKeyDown).keypress(this._doKeyPress).
201	bind("setData.datepicker", function(event, key, value) {
202	inst.settings[key] = value;
203	}).bind("getData.datepicker", function(event, key) {
204	return this._get(inst, key);
205	});
206	$.data(target, PROP_NAME, inst);
207	},
208
209	/* Attach an inline date picker to a div. */
210	_inlineDatepicker: function(target, inst) {
211	var divSpan = $(target);
212	if (divSpan.hasClass(this.markerClassName))
213	return;
214	divSpan.addClass(this.markerClassName).append(inst.dpDiv).
215	bind("setData.datepicker", function(event, key, value){
216	inst.settings[key] = value;
217	}).bind("getData.datepicker", function(event, key){
218	return this._get(inst, key);
219	});
220	$.data(target, PROP_NAME, inst);
221	this._setDate(inst, this._getDefaultDate(inst));
222	this._updateDatepicker(inst);
223	this._updateAlternate(inst);
224	},
225
226	/* Pop-up the date picker in a "dialog" box.
227	@param input element - ignored
228	@param dateText string - the initial date to display (in the current format)
229	@param onSelect function - the function(dateText) to call when a date is selected
230	@param settings object - update the dialog date picker instance's settings (anonymous object)
231	@param pos int[2] - coordinates for the dialog's position within the screen or
232	event - with x/y coordinates or
233	leave empty for default (screen centre)
234	@return the manager object */
235	_dialogDatepicker: function(input, dateText, onSelect, settings, pos) {
236	var inst = this._dialogInst; // internal instance
237	if (!inst) {
238	var id = 'dp' + (++this.uuid);
239	this._dialogInput = $('<input type="text" id="' + id +
240	'" size="1" style="position: absolute; top: -100px;"/>');
241	this._dialogInput.keydown(this._doKeyDown);
242	$('body').append(this._dialogInput);
243	inst = this._dialogInst = this._newInst(this._dialogInput, false);
244	inst.settings = {};
245	$.data(this._dialogInput[0], PROP_NAME, inst);
246	}
247	extendRemove(inst.settings, settings \|\| {});
248	this._dialogInput.val(dateText);
249
250	this._pos = (pos ? (pos.length ? pos : [pos.pageX, pos.pageY]) : null);
251	if (!this._pos) {
252	var browserWidth = window.innerWidth \|\| document.documentElement.clientWidth \|\| document.body.clientWidth;
253	var browserHeight = window.innerHeight \|\| document.documentElement.clientHeight \|\| document.body.clientHeight;
254	var scrollX = document.documentElement.scrollLeft \|\| document.body.scrollLeft;
255	var scrollY = document.documentElement.scrollTop \|\| document.body.scrollTop;
256	this._pos = // should use actual width/height below
257	[(browserWidth / 2) - 100 + scrollX, (browserHeight / 2) - 150 + scrollY];
258	}
259
260	// move input on screen for focus, but hidden behind dialog
261	this._dialogInput.css('left', this._pos[0] + 'px').css('top', this._pos[1] + 'px');
262	inst.settings.onSelect = onSelect;
263	this._inDialog = true;
264	this.dpDiv.addClass(this._dialogClass);
265	this._showDatepicker(this._dialogInput[0]);
266	if ($.blockUI)
267	$.blockUI(this.dpDiv);
268	$.data(this._dialogInput[0], PROP_NAME, inst);
269	return this;
270	},
271
272	/* Detach a datepicker from its control.
273	@param target element - the target input field or division or span */
274	_destroyDatepicker: function(target) {
275	var $target = $(target);
276	var inst = $.data(target, PROP_NAME);
277	if (!$target.hasClass(this.markerClassName)) {
278	return;
279	}
280	var nodeName = target.nodeName.toLowerCase();
281	$.removeData(target, PROP_NAME);
282	if (nodeName == 'input') {
283	inst.append.remove();
284	inst.trigger.remove();
285	$target.removeClass(this.markerClassName).
286	unbind('focus', this._showDatepicker).
287	unbind('keydown', this._doKeyDown).
288	unbind('keypress', this._doKeyPress);
289	} else if (nodeName == 'div' \|\| nodeName == 'span')
290	$target.removeClass(this.markerClassName).empty();
291	},
292
293	/* Enable the date picker to a jQuery selection.
294	@param target element - the target input field or division or span */
295	_enableDatepicker: function(target) {
296	var $target = $(target);
297	var inst = $.data(target, PROP_NAME);
298	if (!$target.hasClass(this.markerClassName)) {
299	return;
300	}
301	var nodeName = target.nodeName.toLowerCase();
302	if (nodeName == 'input') {
303	target.disabled = false;
304	inst.trigger.filter('button').
305	each(function() { this.disabled = false; }).end().
306	filter('img').css({opacity: '1.0', cursor: ''});
307	}
308	else if (nodeName == 'div' \|\| nodeName == 'span') {
309	var inline = $target.children('.' + this._inlineClass);
310	inline.children().removeClass('ui-state-disabled');
311	}
312	this._disabledInputs = $.map(this._disabledInputs,
313	function(value) { return (value == target ? null : value); }); // delete entry
314	},
315
316	/* Disable the date picker to a jQuery selection.
317	@param target element - the target input field or division or span */
318	_disableDatepicker: function(target) {
319	var $target = $(target);
320	var inst = $.data(target, PROP_NAME);
321	if (!$target.hasClass(this.markerClassName)) {
322	return;
323	}
324	var nodeName = target.nodeName.toLowerCase();
325	if (nodeName == 'input') {
326	target.disabled = true;
327	inst.trigger.filter('button').
328	each(function() { this.disabled = true; }).end().
329	filter('img').css({opacity: '0.5', cursor: 'default'});
330	}
331	else if (nodeName == 'div' \|\| nodeName == 'span') {
332	var inline = $target.children('.' + this._inlineClass);
333	inline.children().addClass('ui-state-disabled');
334	}
335	this._disabledInputs = $.map(this._disabledInputs,
336	function(value) { return (value == target ? null : value); }); // delete entry
337	this._disabledInputs[this._disabledInputs.length] = target;
338	},
339
340	/* Is the first field in a jQuery collection disabled as a datepicker?
341	@param target element - the target input field or division or span
342	@return boolean - true if disabled, false if enabled */
343	_isDisabledDatepicker: function(target) {
344	if (!target) {
345	return false;
346	}
347	for (var i = 0; i < this._disabledInputs.length; i++) {
348	if (this._disabledInputs[i] == target)
349	return true;
350	}
351	return false;
352	},
353
354	/* Retrieve the instance data for the target control.
355	@param target element - the target input field or division or span
356	@return object - the associated instance data
357	@throws error if a jQuery problem getting data */
358	_getInst: function(target) {
359	try {
360	return $.data(target, PROP_NAME);
361	}
362	catch (err) {
363	throw 'Missing instance data for this datepicker';
364	}
365	},
366
367	/* Update or retrieve the settings for a date picker attached to an input field or division.
368	@param target element - the target input field or division or span
369	@param name object - the new settings to update or
370	string - the name of the setting to change or retrieve,
371	when retrieving also 'all' for all instance settings or
372	'defaults' for all global defaults
373	@param value any - the new value for the setting
374	(omit if above is an object or to retrieve a value) */
375	_optionDatepicker: function(target, name, value) {
376	var inst = this._getInst(target);
377	if (arguments.length == 2 && typeof name == 'string') {
378	return (name == 'defaults' ? $.extend({}, $.datepicker._defaults) :
379	(inst ? (name == 'all' ? $.extend({}, inst.settings) :
380	this._get(inst, name)) : null));
381	}
382	var settings = name \|\| {};
383	if (typeof name == 'string') {
384	settings = {};
385	settings[name] = value;
386	}
387	if (inst) {
388	if (this._curInst == inst) {
389	this._hideDatepicker(null);
390	}
391	var date = this._getDateDatepicker(target);
392	extendRemove(inst.settings, settings);
393	this._setDateDatepicker(target, date);
394	this._updateDatepicker(inst);
395	}
396	},
397
398	// change method deprecated
399	_changeDatepicker: function(target, name, value) {
400	this._optionDatepicker(target, name, value);
401	},
402
403	/* Redraw the date picker attached to an input field or division.
404	@param target element - the target input field or division or span */
405	_refreshDatepicker: function(target) {
406	var inst = this._getInst(target);
407	if (inst) {
408	this._updateDatepicker(inst);
409	}
410	},
411
412	/* Set the dates for a jQuery selection.
413	@param target element - the target input field or division or span
414	@param date Date - the new date
415	@param endDate Date - the new end date for a range (optional) */
416	_setDateDatepicker: function(target, date, endDate) {
417	var inst = this._getInst(target);
418	if (inst) {
419	this._setDate(inst, date, endDate);
420	this._updateDatepicker(inst);
421	this._updateAlternate(inst);
422	}
423	},
424
425	/* Get the date(s) for the first entry in a jQuery selection.
426	@param target element - the target input field or division or span
427	@return Date - the current date or
428	Date[2] - the current dates for a range */
429	_getDateDatepicker: function(target) {
430	var inst = this._getInst(target);
431	if (inst && !inst.inline)
432	this._setDateFromField(inst);
433	return (inst ? this._getDate(inst) : null);
434	},
435
436	/* Handle keystrokes. */
437	_doKeyDown: function(event) {
438	var inst = $.datepicker._getInst(event.target);
439	var handled = true;
440	var isRTL = inst.dpDiv.is('.ui-datepicker-rtl');
441	inst._keyEvent = true;
442	if ($.datepicker._datepickerShowing)
443	switch (event.keyCode) {
444	case 9: $.datepicker._hideDatepicker(null, '');
445	break; // hide on tab out
446	case 13: var sel = $('td.' + $.datepicker._dayOverClass +
447	', td.' + $.datepicker._currentClass, inst.dpDiv);
448	if (sel[0])
449	$.datepicker._selectDay(event.target, inst.selectedMonth, inst.selectedYear, sel[0]);
450	else
451	$.datepicker._hideDatepicker(null, $.datepicker._get(inst, 'duration'));
452	return false; // don't submit the form
453	break; // select the value on enter
454	case 27: $.datepicker._hideDatepicker(null, $.datepicker._get(inst, 'duration'));
455	break; // hide on escape
456	case 33: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
457	-$.datepicker._get(inst, 'stepBigMonths') :
458	-$.datepicker._get(inst, 'stepMonths')), 'M');
459	break; // previous month/year on page up/+ ctrl
460	case 34: $.datepicker._adjustDate(event.target, (event.ctrlKey ?
461	+$.datepicker._get(inst, 'stepBigMonths') :
462	+$.datepicker._get(inst, 'stepMonths')), 'M');
463	break; // next month/year on page down/+ ctrl
464	case 35: if (event.ctrlKey \|\| event.metaKey) $.datepicker._clearDate(event.target);
465	handled = event.ctrlKey \|\| event.metaKey;
466	break; // clear on ctrl or command +end
467	case 36: if (event.ctrlKey \|\| event.metaKey) $.datepicker._gotoToday(event.target);
468	handled = event.ctrlKey \|\| event.metaKey;
469	break; // current on ctrl or command +home
470	case 37: if (event.ctrlKey \|\| event.metaKey) $.datepicker._adjustDate(event.target, (isRTL ? +1 : -1), 'D');
471	handled = event.ctrlKey \|\| event.metaKey;
472	// -1 day on ctrl or command +left
473	if (event.originalEvent.altKey) $.datepicker._adjustDate(event.target, (event.ctrlKey ?
474	-$.datepicker._get(inst, 'stepBigMonths') :
475	-$.datepicker._get(inst, 'stepMonths')), 'M');
476	// next month/year on alt +left on Mac
477	break;
478	case 38: if (event.ctrlKey \|\| event.metaKey) $.datepicker._adjustDate(event.target, -7, 'D');
479	handled = event.ctrlKey \|\| event.metaKey;
480	break; // -1 week on ctrl or command +up
481	case 39: if (event.ctrlKey \|\| event.metaKey) $.datepicker._adjustDate(event.target, (isRTL ? -1 : +1), 'D');
482	handled = event.ctrlKey \|\| event.metaKey;
483	// +1 day on ctrl or command +right
484	if (event.originalEvent.altKey) $.datepicker._adjustDate(event.target, (event.ctrlKey ?
485	+$.datepicker._get(inst, 'stepBigMonths') :
486	+$.datepicker._get(inst, 'stepMonths')), 'M');
487	// next month/year on alt +right
488	break;
489	case 40: if (event.ctrlKey \|\| event.metaKey) $.datepicker._adjustDate(event.target, +7, 'D');
490	handled = event.ctrlKey \|\| event.metaKey;
491	break; // +1 week on ctrl or command +down
492	default: handled = false;
493	}
494	else if (event.keyCode == 36 && event.ctrlKey) // display the date picker on ctrl+home
495	$.datepicker._showDatepicker(this);
496	else {
497	handled = false;
498	}
499	if (handled) {
500	event.preventDefault();
501	event.stopPropagation();
502	}
503	},
504
505	/* Filter entered characters - based on date format. */
506	_doKeyPress: function(event) {
507	var inst = $.datepicker._getInst(event.target);
508	if ($.datepicker._get(inst, 'constrainInput')) {
509	var chars = $.datepicker._possibleChars($.datepicker._get(inst, 'dateFormat'));
510	var chr = String.fromCharCode(event.charCode == undefined ? event.keyCode : event.charCode);
511	return event.ctrlKey \|\| (chr < ' ' \|\| !chars \|\| chars.indexOf(chr) > -1);
512	}
513	},
514
515	/* Pop-up the date picker for a given input field.
516	@param input element - the input field attached to the date picker or
517	event - if triggered by focus */
518	_showDatepicker: function(input) {
519	input = input.target \|\| input;
520	if (input.nodeName.toLowerCase() != 'input') // find from button/image trigger
521	input = $('input', input.parentNode)[0];
522	if ($.datepicker._isDisabledDatepicker(input) \|\| $.datepicker._lastInput == input) // already here
523	return;
524	var inst = $.datepicker._getInst(input);
525	var beforeShow = $.datepicker._get(inst, 'beforeShow');
526	extendRemove(inst.settings, (beforeShow ? beforeShow.apply(input, [input, inst]) : {}));
527	$.datepicker._hideDatepicker(null, '');
528	$.datepicker._lastInput = input;
529	$.datepicker._setDateFromField(inst);
530	if ($.datepicker._inDialog) // hide cursor
531	input.value = '';
532	if (!$.datepicker._pos) { // position below input
533	$.datepicker._pos = $.datepicker._findPos(input);
534	$.datepicker._pos[1] += input.offsetHeight; // add the height
535	}
536	var isFixed = false;
537	$(input).parents().each(function() {
538	isFixed \|= $(this).css('position') == 'fixed';
539	return !isFixed;
540	});
541	if (isFixed && $.browser.opera) { // correction for Opera when fixed and scrolled
542	$.datepicker._pos[0] -= document.documentElement.scrollLeft;
543	$.datepicker._pos[1] -= document.documentElement.scrollTop;
544	}
545	var offset = {left: $.datepicker._pos[0], top: $.datepicker._pos[1]};
546	$.datepicker._pos = null;
547	inst.rangeStart = null;
548	// determine sizing offscreen
549	inst.dpDiv.css({position: 'absolute', display: 'block', top: '-1000px'});
550	$.datepicker._updateDatepicker(inst);
551	// fix width for dynamic number of date pickers
552	// and adjust position before showing
553	offset = $.datepicker._checkOffset(inst, offset, isFixed);
554	inst.dpDiv.css({position: ($.datepicker._inDialog && $.blockUI ?
555	'static' : (isFixed ? 'fixed' : 'absolute')), display: 'none',
556	left: offset.left + 'px', top: offset.top + 'px'});
557	if (!inst.inline) {
558	var showAnim = $.datepicker._get(inst, 'showAnim') \|\| 'show';
559	var duration = $.datepicker._get(inst, 'duration');
560	var postProcess = function() {
561	$.datepicker._datepickerShowing = true;
562	if ($.browser.msie && parseInt($.browser.version,10) < 7) // fix IE < 7 select problems
563	$('iframe.ui-datepicker-cover').css({width: inst.dpDiv.width() + 4,
564	height: inst.dpDiv.height() + 4});
565	};
566	if ($.effects && $.effects[showAnim])
567	inst.dpDiv.show(showAnim, $.datepicker._get(inst, 'showOptions'), duration, postProcess);
568	else
569	inst.dpDiv[showAnim](duration, postProcess);
570	if (duration == '')
571	postProcess();
572	if (inst.input[0].type != 'hidden')
573	inst.input[0].focus();
574	$.datepicker._curInst = inst;
575	}
576	},
577
578	/* Generate the date picker content. */
579	_updateDatepicker: function(inst) {
580	var dims = {width: inst.dpDiv.width() + 4,
581	height: inst.dpDiv.height() + 4};
582	var self = this;
583	inst.dpDiv.empty().append(this._generateHTML(inst))
584	.find('iframe.ui-datepicker-cover').
585	css({width: dims.width, height: dims.height})
586	.end()
587	.find('button, .ui-datepicker-prev, .ui-datepicker-next, .ui-datepicker-calendar td a')
588	.bind('mouseout', function(){
589	$(this).removeClass('ui-state-hover');
590	if(this.className.indexOf('ui-datepicker-prev') != -1) $(this).removeClass('ui-datepicker-prev-hover');
591	if(this.className.indexOf('ui-datepicker-next') != -1) $(this).removeClass('ui-datepicker-next-hover');
592	})
593	.bind('mouseover', function(){
594	if (!self._isDisabledDatepicker( inst.inline ? inst.dpDiv.parent()[0] : inst.input[0])) {
595	$(this).parents('.ui-datepicker-calendar').find('a').removeClass('ui-state-hover');
596	$(this).addClass('ui-state-hover');
597	if(this.className.indexOf('ui-datepicker-prev') != -1) $(this).addClass('ui-datepicker-prev-hover');
598	if(this.className.indexOf('ui-datepicker-next') != -1) $(this).addClass('ui-datepicker-next-hover');
599	}
600	})
601	.end()
602	.find('.' + this._dayOverClass + ' a')
603	.trigger('mouseover')
604	.end();
605	var numMonths = this._getNumberOfMonths(inst);
606	var cols = numMonths[1];
607	var width = 17;
608	if (cols > 1) {
609	inst.dpDiv.addClass('ui-datepicker-multi-' + cols).css('width', (width * cols) + 'em');
610	} else {
611	inst.dpDiv.removeClass('ui-datepicker-multi-2 ui-datepicker-multi-3 ui-datepicker-multi-4').width('');
612	}
613	inst.dpDiv[(numMonths[0] != 1 \|\| numMonths[1] != 1 ? 'add' : 'remove') +
614	'Class']('ui-datepicker-multi');
615	inst.dpDiv[(this._get(inst, 'isRTL') ? 'add' : 'remove') +
616	'Class']('ui-datepicker-rtl');
617	if (inst.input && inst.input[0].type != 'hidden' && inst == $.datepicker._curInst)
618	$(inst.input[0]).focus();
619	},
620
621	/* Check positioning to remain on screen. */
622	_checkOffset: function(inst, offset, isFixed) {
623	var dpWidth = inst.dpDiv.outerWidth();
624	var dpHeight = inst.dpDiv.outerHeight();
625	var inputWidth = inst.input ? inst.input.outerWidth() : 0;
626	var inputHeight = inst.input ? inst.input.outerHeight() : 0;
627	var viewWidth = (window.innerWidth \|\| document.documentElement.clientWidth \|\| document.body.clientWidth) + $(document).scrollLeft();
628	var viewHeight = (window.innerHeight \|\| document.documentElement.clientHeight \|\| document.body.clientHeight) + $(document).scrollTop();
629
630	offset.left -= (this._get(inst, 'isRTL') ? (dpWidth - inputWidth) : 0);
631	offset.left -= (isFixed && offset.left == inst.input.offset().left) ? $(document).scrollLeft() : 0;
632	offset.top -= (isFixed && offset.top == (inst.input.offset().top + inputHeight)) ? $(document).scrollTop() : 0;
633
634	// now check if datepicker is showing outside window viewport - move to a better place if so.
635	offset.left -= (offset.left + dpWidth > viewWidth && viewWidth > dpWidth) ? Math.abs(offset.left + dpWidth - viewWidth) : 0;
636	offset.top -= (offset.top + dpHeight > viewHeight && viewHeight > dpHeight) ? Math.abs(offset.top + dpHeight + inputHeight*2 - viewHeight) : 0;
637
638	return offset;
639	},
640
641	/* Find an object's position on the screen. */
642	_findPos: function(obj) {
643	while (obj && (obj.type == 'hidden' \|\| obj.nodeType != 1)) {
644	obj = obj.nextSibling;
645	}
646	var position = $(obj).offset();
647	return [position.left, position.top];
648	},
649
650	/* Hide the date picker from view.
651	@param input element - the input field attached to the date picker
652	@param duration string - the duration over which to close the date picker */
653	_hideDatepicker: function(input, duration) {
654	var inst = this._curInst;
655	if (!inst \|\| (input && inst != $.data(input, PROP_NAME)))
656	return;
657	if (inst.stayOpen)
658	this._selectDate('#' + inst.id, this._formatDate(inst,
659	inst.currentDay, inst.currentMonth, inst.currentYear));
660	inst.stayOpen = false;
661	if (this._datepickerShowing) {
662	duration = (duration != null ? duration : this._get(inst, 'duration'));
663	var showAnim = this._get(inst, 'showAnim');
664	var postProcess = function() {
665	$.datepicker._tidyDialog(inst);
666	};
667	if (duration != '' && $.effects && $.effects[showAnim])
668	inst.dpDiv.hide(showAnim, $.datepicker._get(inst, 'showOptions'),
669	duration, postProcess);
670	else
671	inst.dpDiv[(duration == '' ? 'hide' : (showAnim == 'slideDown' ? 'slideUp' :
672	(showAnim == 'fadeIn' ? 'fadeOut' : 'hide')))](duration, postProcess);
673	if (duration == '')
674	this._tidyDialog(inst);
675	var onClose = this._get(inst, 'onClose');
676	if (onClose)
677	onClose.apply((inst.input ? inst.input[0] : null),
678	[(inst.input ? inst.input.val() : ''), inst]); // trigger custom callback
679	this._datepickerShowing = false;
680	this._lastInput = null;
681	if (this._inDialog) {
682	this._dialogInput.css({ position: 'absolute', left: '0', top: '-100px' });
683	if ($.blockUI) {
684	$.unblockUI();
685	$('body').append(this.dpDiv);
686	}
687	}
688	this._inDialog = false;
689	}
690	this._curInst = null;
691	},
692
693	/* Tidy up after a dialog display. */
694	_tidyDialog: function(inst) {
695	inst.dpDiv.removeClass(this._dialogClass).unbind('.ui-datepicker-calendar');
696	},
697
698	/* Close date picker if clicked elsewhere. */
699	_checkExternalClick: function(event) {
700	if (!$.datepicker._curInst)
701	return;
702	var $target = $(event.target);
703	if (($target.parents('#' + $.datepicker._mainDivId).length == 0) &&
704	!$target.hasClass($.datepicker.markerClassName) &&
705	!$target.hasClass($.datepicker._triggerClass) &&
706	$.datepicker._datepickerShowing && !($.datepicker._inDialog && $.blockUI))
707	$.datepicker._hideDatepicker(null, '');
708	},
709
710	/* Adjust one of the date sub-fields. */
711	_adjustDate: function(id, offset, period) {
712	var target = $(id);
713	var inst = this._getInst(target[0]);
714	if (this._isDisabledDatepicker(target[0])) {
715	return;
716	}
717	this._adjustInstDate(inst, offset +
718	(period == 'M' ? this._get(inst, 'showCurrentAtPos') : 0), // undo positioning
719	period);
720	this._updateDatepicker(inst);
721	},
722
723	/* Action for current link. */
724	_gotoToday: function(id) {
725	var target = $(id);
726	var inst = this._getInst(target[0]);
727	if (this._get(inst, 'gotoCurrent') && inst.currentDay) {
728	inst.selectedDay = inst.currentDay;
729	inst.drawMonth = inst.selectedMonth = inst.currentMonth;
730	inst.drawYear = inst.selectedYear = inst.currentYear;
731	}
732	else {
733	var date = new Date();
734	inst.selectedDay = date.getDate();
735	inst.drawMonth = inst.selectedMonth = date.getMonth();
736	inst.drawYear = inst.selectedYear = date.getFullYear();
737	}
738	this._notifyChange(inst);
739	this._adjustDate(target);
740	},
741
742	/* Action for selecting a new month/year. */
743	_selectMonthYear: function(id, select, period) {
744	var target = $(id);
745	var inst = this._getInst(target[0]);
746	inst._selectingMonthYear = false;
747	inst['selected' + (period == 'M' ? 'Month' : 'Year')] =
748	inst['draw' + (period == 'M' ? 'Month' : 'Year')] =
749	parseInt(select.options[select.selectedIndex].value,10);
750	this._notifyChange(inst);
751	this._adjustDate(target);
752	},
753
754	/* Restore input focus after not changing month/year. */
755	_clickMonthYear: function(id) {
756	var target = $(id);
757	var inst = this._getInst(target[0]);
758	if (inst.input && inst._selectingMonthYear && !$.browser.msie)
759	inst.input[0].focus();
760	inst._selectingMonthYear = !inst._selectingMonthYear;
761	},
762
763	/* Action for selecting a day. */
764	_selectDay: function(id, month, year, td) {
765	var target = $(id);
766	if ($(td).hasClass(this._unselectableClass) \|\| this._isDisabledDatepicker(target[0])) {
767	return;
768	}
769	var inst = this._getInst(target[0]);
770	inst.selectedDay = inst.currentDay = $('a', td).html();
771	inst.selectedMonth = inst.currentMonth = month;
772	inst.selectedYear = inst.currentYear = year;
773	if (inst.stayOpen) {
774	inst.endDay = inst.endMonth = inst.endYear = null;
775	}
776	this._selectDate(id, this._formatDate(inst,
777	inst.currentDay, inst.currentMonth, inst.currentYear));
778	if (inst.stayOpen) {
779	inst.rangeStart = this._daylightSavingAdjust(
780	new Date(inst.currentYear, inst.currentMonth, inst.currentDay));
781	this._updateDatepicker(inst);
782	}
783	},
784
785	/* Erase the input field and hide the date picker. */
786	_clearDate: function(id) {
787	var target = $(id);
788	var inst = this._getInst(target[0]);
789	inst.stayOpen = false;
790	inst.endDay = inst.endMonth = inst.endYear = inst.rangeStart = null;
791	this._selectDate(target, '');
792	},
793
794	/* Update the input field with the selected date. */
795	_selectDate: function(id, dateStr) {
796	var target = $(id);
797	var inst = this._getInst(target[0]);
798	dateStr = (dateStr != null ? dateStr : this._formatDate(inst));
799	if (inst.input)
800	inst.input.val(dateStr);
801	this._updateAlternate(inst);
802	var onSelect = this._get(inst, 'onSelect');
803	if (onSelect)
804	onSelect.apply((inst.input ? inst.input[0] : null), [dateStr, inst]); // trigger custom callback
805	else if (inst.input)
806	inst.input.trigger('change'); // fire the change event
807	if (inst.inline)
808	this._updateDatepicker(inst);
809	else if (!inst.stayOpen) {
810	this._hideDatepicker(null, this._get(inst, 'duration'));
811	this._lastInput = inst.input[0];
812	if (typeof(inst.input[0]) != 'object')
813	inst.input[0].focus(); // restore focus
814	this._lastInput = null;
815	}
816	},
817
818	/* Update any alternate field to synchronise with the main field. */
819	_updateAlternate: function(inst) {
820	var altField = this._get(inst, 'altField');
821	if (altField) { // update alternate field too
822	var altFormat = this._get(inst, 'altFormat') \|\| this._get(inst, 'dateFormat');
823	var date = this._getDate(inst);
824	dateStr = this.formatDate(altFormat, date, this._getFormatConfig(inst));
825	$(altField).each(function() { $(this).val(dateStr); });
826	}
827	},
828
829	/* Set as beforeShowDay function to prevent selection of weekends.
830	@param date Date - the date to customise
831	@return [boolean, string] - is this date selectable?, what is its CSS class? */
832	noWeekends: function(date) {
833	var day = date.getDay();
834	return [(day > 0 && day < 6), ''];
835	},
836
837	/* Set as calculateWeek to determine the week of the year based on the ISO 8601 definition.
838	@param date Date - the date to get the week for
839	@return number - the number of the week within the year that contains this date */
840	iso8601Week: function(date) {
841	var checkDate = new Date(date.getFullYear(), date.getMonth(), date.getDate());
842	var firstMon = new Date(checkDate.getFullYear(), 1 - 1, 4); // First week always contains 4 Jan
843	var firstDay = firstMon.getDay() \|\| 7; // Day of week: Mon = 1, ..., Sun = 7
844	firstMon.setDate(firstMon.getDate() + 1 - firstDay); // Preceding Monday
845	if (firstDay < 4 && checkDate < firstMon) { // Adjust first three days in year if necessary
846	checkDate.setDate(checkDate.getDate() - 3); // Generate for previous year
847	return $.datepicker.iso8601Week(checkDate);
848	} else if (checkDate > new Date(checkDate.getFullYear(), 12 - 1, 28)) { // Check last three days in year
849	firstDay = new Date(checkDate.getFullYear() + 1, 1 - 1, 4).getDay() \|\| 7;
850	if (firstDay > 4 && (checkDate.getDay() \|\| 7) < firstDay - 3) { // Adjust if necessary
851	return 1;
852	}
853	}
854	return Math.floor(((checkDate - firstMon) / 86400000) / 7) + 1; // Weeks to given date
855	},
856
857	/* Parse a string value into a date object.
858	See formatDate below for the possible formats.
859
860	@param format string - the expected format of the date
861	@param value string - the date in the above format
862	@param settings Object - attributes include:
863	shortYearCutoff number - the cutoff year for determining the century (optional)
864	dayNamesShort string[7] - abbreviated names of the days from Sunday (optional)
865	dayNames string[7] - names of the days from Sunday (optional)
866	monthNamesShort string[12] - abbreviated names of the months (optional)
867	monthNames string[12] - names of the months (optional)
868	@return Date - the extracted date value or null if value is blank */
869	parseDate: function (format, value, settings) {
870	if (format == null \|\| value == null)
871	throw 'Invalid arguments';
872	value = (typeof value == 'object' ? value.toString() : value + '');
873	if (value == '')
874	return null;
875	var shortYearCutoff = (settings ? settings.shortYearCutoff : null) \|\| this._defaults.shortYearCutoff;
876	var dayNamesShort = (settings ? settings.dayNamesShort : null) \|\| this._defaults.dayNamesShort;
877	var dayNames = (settings ? settings.dayNames : null) \|\| this._defaults.dayNames;
878	var monthNamesShort = (settings ? settings.monthNamesShort : null) \|\| this._defaults.monthNamesShort;
879	var monthNames = (settings ? settings.monthNames : null) \|\| this._defaults.monthNames;
880	var year = -1;
881	var month = -1;
882	var day = -1;
883	var doy = -1;
884	var literal = false;
885	// Check whether a format character is doubled
886	var lookAhead = function(match) {
887	var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
888	if (matches)
889	iFormat++;
890	return matches;
891	};
892	// Extract a number from the string value
893	var getNumber = function(match) {
894	lookAhead(match);
895	var origSize = (match == '@' ? 14 : (match == 'y' ? 4 : (match == 'o' ? 3 : 2)));
896	var size = origSize;
897	var num = 0;
898	while (size > 0 && iValue < value.length &&
899	value.charAt(iValue) >= '0' && value.charAt(iValue) <= '9') {
900	num = num * 10 + parseInt(value.charAt(iValue++),10);
901	size--;
902	}
903	if (size == origSize)
904	throw 'Missing number at position ' + iValue;
905	return num;
906	};
907	// Extract a name from the string value and convert to an index
908	var getName = function(match, shortNames, longNames) {
909	var names = (lookAhead(match) ? longNames : shortNames);
910	var size = 0;
911	for (var j = 0; j < names.length; j++)
912	size = Math.max(size, names[j].length);
913	var name = '';
914	var iInit = iValue;
915	while (size > 0 && iValue < value.length) {
916	name += value.charAt(iValue++);
917	for (var i = 0; i < names.length; i++)
918	if (name == names[i])
919	return i + 1;
920	size--;
921	}
922	throw 'Unknown name at position ' + iInit;
923	};
924	// Confirm that a literal character matches the string value
925	var checkLiteral = function() {
926	if (value.charAt(iValue) != format.charAt(iFormat))
927	throw 'Unexpected literal at position ' + iValue;
928	iValue++;
929	};
930	var iValue = 0;
931	for (var iFormat = 0; iFormat < format.length; iFormat++) {
932	if (literal)
933	if (format.charAt(iFormat) == "'" && !lookAhead("'"))
934	literal = false;
935	else
936	checkLiteral();
937	else
938	switch (format.charAt(iFormat)) {
939	case 'd':
940	day = getNumber('d');
941	break;
942	case 'D':
943	getName('D', dayNamesShort, dayNames);
944	break;
945	case 'o':
946	doy = getNumber('o');
947	break;
948	case 'm':
949	month = getNumber('m');
950	break;
951	case 'M':
952	month = getName('M', monthNamesShort, monthNames);
953	break;
954	case 'y':
955	year = getNumber('y');
956	break;
957	case '@':
958	var date = new Date(getNumber('@'));
959	year = date.getFullYear();
960	month = date.getMonth() + 1;
961	day = date.getDate();
962	break;
963	case "'":
964	if (lookAhead("'"))
965	checkLiteral();
966	else
967	literal = true;
968	break;
969	default:
970	checkLiteral();
971	}
972	}
973	if (year == -1)
974	year = new Date().getFullYear();
975	else if (year < 100)
976	year += new Date().getFullYear() - new Date().getFullYear() % 100 +
977	(year <= shortYearCutoff ? 0 : -100);
978	if (doy > -1) {
979	month = 1;
980	day = doy;
981	do {
982	var dim = this._getDaysInMonth(year, month - 1);
983	if (day <= dim)
984	break;
985	month++;
986	day -= dim;
987	} while (true);
988	}
989	var date = this._daylightSavingAdjust(new Date(year, month - 1, day));
990	if (date.getFullYear() != year \|\| date.getMonth() + 1 != month \|\| date.getDate() != day)
991	throw 'Invalid date'; // E.g. 31/02/*
992	return date;
993	},
994
995	/* Standard date formats. */
996	ATOM: 'yy-mm-dd', // RFC 3339 (ISO 8601)
997	COOKIE: 'D, dd M yy',
998	ISO_8601: 'yy-mm-dd',
999	RFC_822: 'D, d M y',
1000	RFC_850: 'DD, dd-M-y',
1001	RFC_1036: 'D, d M y',
1002	RFC_1123: 'D, d M yy',
1003	RFC_2822: 'D, d M yy',
1004	RSS: 'D, d M y', // RFC 822
1005	TIMESTAMP: '@',
1006	W3C: 'yy-mm-dd', // ISO 8601
1007
1008	/* Format a date object into a string value.
1009	The format can be combinations of the following:
1010	d - day of month (no leading zero)
1011	dd - day of month (two digit)
1012	o - day of year (no leading zeros)
1013	oo - day of year (three digit)
1014	D - day name short
1015	DD - day name long
1016	m - month of year (no leading zero)
1017	mm - month of year (two digit)
1018	M - month name short
1019	MM - month name long
1020	y - year (two digit)
1021	yy - year (four digit)
1022	@ - Unix timestamp (ms since 01/01/1970)
1023	'...' - literal text
1024	'' - single quote
1025
1026	@param format string - the desired format of the date
1027	@param date Date - the date value to format
1028	@param settings Object - attributes include:
1029	dayNamesShort string[7] - abbreviated names of the days from Sunday (optional)
1030	dayNames string[7] - names of the days from Sunday (optional)
1031	monthNamesShort string[12] - abbreviated names of the months (optional)
1032	monthNames string[12] - names of the months (optional)
1033	@return string - the date in the above format */
1034	formatDate: function (format, date, settings) {
1035	if (!date)
1036	return '';
1037	var dayNamesShort = (settings ? settings.dayNamesShort : null) \|\| this._defaults.dayNamesShort;
1038	var dayNames = (settings ? settings.dayNames : null) \|\| this._defaults.dayNames;
1039	var monthNamesShort = (settings ? settings.monthNamesShort : null) \|\| this._defaults.monthNamesShort;
1040	var monthNames = (settings ? settings.monthNames : null) \|\| this._defaults.monthNames;
1041	// Check whether a format character is doubled
1042	var lookAhead = function(match) {
1043	var matches = (iFormat + 1 < format.length && format.charAt(iFormat + 1) == match);
1044	if (matches)
1045	iFormat++;
1046	return matches;
1047	};
1048	// Format a number, with leading zero if necessary
1049	var formatNumber = function(match, value, len) {
1050	var num = '' + value;
1051	if (lookAhead(match))
1052	while (num.length < len)
1053	num = '0' + num;
1054	return num;
1055	};
1056	// Format a name, short or long as requested
1057	var formatName = function(match, value, shortNames, longNames) {
1058	return (lookAhead(match) ? longNames[value] : shortNames[value]);
1059	};
1060	var output = '';
1061	var literal = false;
1062	if (date)
1063	for (var iFormat = 0; iFormat < format.length; iFormat++) {
1064	if (literal)
1065	if (format.charAt(iFormat) == "'" && !lookAhead("'"))
1066	literal = false;
1067	else
1068	output += format.charAt(iFormat);
1069	else
1070	switch (format.charAt(iFormat)) {
1071	case 'd':
1072	output += formatNumber('d', date.getDate(), 2);
1073	break;
1074	case 'D':
1075	output += formatName('D', date.getDay(), dayNamesShort, dayNames);
1076	break;
1077	case 'o':
1078	var doy = date.getDate();
1079	for (var m = date.getMonth() - 1; m >= 0; m--)
1080	doy += this._getDaysInMonth(date.getFullYear(), m);
1081	output += formatNumber('o', doy, 3);
1082	break;
1083	case 'm':
1084	output += formatNumber('m', date.getMonth() + 1, 2);
1085	break;
1086	case 'M':
1087	output += formatName('M', date.getMonth(), monthNamesShort, monthNames);
1088	break;
1089	case 'y':
1090	output += (lookAhead('y') ? date.getFullYear() :
1091	(date.getYear() % 100 < 10 ? '0' : '') + date.getYear() % 100);
1092	break;
1093	case '@':
1094	output += date.getTime();
1095	break;
1096	case "'":
1097	if (lookAhead("'"))
1098	output += "'";
1099	else
1100	literal = true;
1101	break;
1102	default:
1103	output += format.charAt(iFormat);
1104	}
1105	}
1106	return output;
1107	},
1108
1109	/* Extract all possible characters from the date format. */
1110	_possibleChars: function (format) {
1111	var chars = '';
1112	var literal = false;
1113	for (var iFormat = 0; iFormat < format.length; iFormat++)
1114	if (literal)
1115	if (format.charAt(iFormat) == "'" && !lookAhead("'"))
1116	literal = false;
1117	else
1118	chars += format.charAt(iFormat);
1119	else
1120	switch (format.charAt(iFormat)) {
1121	case 'd': case 'm': case 'y': case '@':
1122	chars += '0123456789';
1123	break;
1124	case 'D': case 'M':
1125	return null; // Accept anything
1126	case "'":
1127	if (lookAhead("'"))
1128	chars += "'";
1129	else
1130	literal = true;
1131	break;
1132	default:
1133	chars += format.charAt(iFormat);
1134	}
1135	return chars;
1136	},
1137
1138	/* Get a setting value, defaulting if necessary. */
1139	_get: function(inst, name) {
1140	return inst.settings[name] !== undefined ?
1141	inst.settings[name] : this._defaults[name];
1142	},
1143
1144	/* Parse existing date and initialise date picker. */
1145	_setDateFromField: function(inst) {
1146	var dateFormat = this._get(inst, 'dateFormat');
1147	var dates = inst.input ? inst.input.val() : null;
1148	inst.endDay = inst.endMonth = inst.endYear = null;
1149	var date = defaultDate = this._getDefaultDate(inst);
1150	var settings = this._getFormatConfig(inst);
1151	try {
1152	date = this.parseDate(dateFormat, dates, settings) \|\| defaultDate;
1153	} catch (event) {
1154	this.log(event);
1155	date = defaultDate;
1156	}
1157	inst.selectedDay = date.getDate();
1158	inst.drawMonth = inst.selectedMonth = date.getMonth();
1159	inst.drawYear = inst.selectedYear = date.getFullYear();
1160	inst.currentDay = (dates ? date.getDate() : 0);
1161	inst.currentMonth = (dates ? date.getMonth() : 0);
1162	inst.currentYear = (dates ? date.getFullYear() : 0);
1163	this._adjustInstDate(inst);
1164	},
1165
1166	/* Retrieve the default date shown on opening. */
1167	_getDefaultDate: function(inst) {
1168	var date = this._determineDate(this._get(inst, 'defaultDate'), new Date());
1169	var minDate = this._getMinMaxDate(inst, 'min', true);
1170	var maxDate = this._getMinMaxDate(inst, 'max');
1171	date = (minDate && date < minDate ? minDate : date);
1172	date = (maxDate && date > maxDate ? maxDate : date);
1173	return date;
1174	},
1175
1176	/* A date may be specified as an exact value or a relative one. */
1177	_determineDate: function(date, defaultDate) {
1178	var offsetNumeric = function(offset) {
1179	var date = new Date();
1180	date.setDate(date.getDate() + offset);
1181	return date;
1182	};
1183	var offsetString = function(offset, getDaysInMonth) {
1184	var date = new Date();
1185	var year = date.getFullYear();
1186	var month = date.getMonth();
1187	var day = date.getDate();
1188	var pattern = /([+-]?[0-9]+)\s*(d\|D\|w\|W\|m\|M\|y\|Y)?/g;
1189	var matches = pattern.exec(offset);
1190	while (matches) {
1191	switch (matches[2] \|\| 'd') {
1192	case 'd' : case 'D' :
1193	day += parseInt(matches[1],10); break;
1194	case 'w' : case 'W' :
1195	day += parseInt(matches[1],10) * 7; break;
1196	case 'm' : case 'M' :
1197	month += parseInt(matches[1],10);
1198	day = Math.min(day, getDaysInMonth(year, month));
1199	break;
1200	case 'y': case 'Y' :
1201	year += parseInt(matches[1],10);
1202	day = Math.min(day, getDaysInMonth(year, month));
1203	break;
1204	}
1205	matches = pattern.exec(offset);
1206	}
1207	return new Date(year, month, day);
1208	};
1209	date = (date == null ? defaultDate :
1210	(typeof date == 'string' ? offsetString(date, this._getDaysInMonth) :
1211	(typeof date == 'number' ? (isNaN(date) ? defaultDate : offsetNumeric(date)) : date)));
1212	date = (date && date.toString() == 'Invalid Date' ? defaultDate : date);
1213	if (date) {
1214	date.setHours(0);
1215	date.setMinutes(0);
1216	date.setSeconds(0);
1217	date.setMilliseconds(0);
1218	}
1219	return this._daylightSavingAdjust(date);
1220	},
1221
1222	/* Handle switch to/from daylight saving.
1223	Hours may be non-zero on daylight saving cut-over:
1224	> 12 when midnight changeover, but then cannot generate
1225	midnight datetime, so jump to 1AM, otherwise reset.
1226	@param date (Date) the date to check
1227	@return (Date) the corrected date */
1228	_daylightSavingAdjust: function(date) {
1229	if (!date) return null;
1230	date.setHours(date.getHours() > 12 ? date.getHours() + 2 : 0);
1231	return date;
1232	},
1233
1234	/* Set the date(s) directly. */
1235	_setDate: function(inst, date, endDate) {
1236	var clear = !(date);
1237	var origMonth = inst.selectedMonth;
1238	var origYear = inst.selectedYear;
1239	date = this._determineDate(date, new Date());
1240	inst.selectedDay = inst.currentDay = date.getDate();
1241	inst.drawMonth = inst.selectedMonth = inst.currentMonth = date.getMonth();
1242	inst.drawYear = inst.selectedYear = inst.currentYear = date.getFullYear();
1243	if (origMonth != inst.selectedMonth \|\| origYear != inst.selectedYear)
1244	this._notifyChange(inst);
1245	this._adjustInstDate(inst);
1246	if (inst.input) {
1247	inst.input.val(clear ? '' : this._formatDate(inst));
1248	}
1249	},
1250
1251	/* Retrieve the date(s) directly. */
1252	_getDate: function(inst) {
1253	var startDate = (!inst.currentYear \|\| (inst.input && inst.input.val() == '') ? null :
1254	this._daylightSavingAdjust(new Date(
1255	inst.currentYear, inst.currentMonth, inst.currentDay)));
1256	return startDate;
1257	},
1258
1259	/* Generate the HTML for the current state of the date picker. */
1260	_generateHTML: function(inst) {
1261	var today = new Date();
1262	today = this._daylightSavingAdjust(
1263	new Date(today.getFullYear(), today.getMonth(), today.getDate())); // clear time
1264	var isRTL = this._get(inst, 'isRTL');
1265	var showButtonPanel = this._get(inst, 'showButtonPanel');
1266	var hideIfNoPrevNext = this._get(inst, 'hideIfNoPrevNext');
1267	var navigationAsDateFormat = this._get(inst, 'navigationAsDateFormat');
1268	var numMonths = this._getNumberOfMonths(inst);
1269	var showCurrentAtPos = this._get(inst, 'showCurrentAtPos');
1270	var stepMonths = this._get(inst, 'stepMonths');
1271	var stepBigMonths = this._get(inst, 'stepBigMonths');
1272	var isMultiMonth = (numMonths[0] != 1 \|\| numMonths[1] != 1);
1273	var currentDate = this._daylightSavingAdjust((!inst.currentDay ? new Date(9999, 9, 9) :
1274	new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
1275	var minDate = this._getMinMaxDate(inst, 'min', true);
1276	var maxDate = this._getMinMaxDate(inst, 'max');
1277	var drawMonth = inst.drawMonth - showCurrentAtPos;
1278	var drawYear = inst.drawYear;
1279	if (drawMonth < 0) {
1280	drawMonth += 12;
1281	drawYear--;
1282	}
1283	if (maxDate) {
1284	var maxDraw = this._daylightSavingAdjust(new Date(maxDate.getFullYear(),
1285	maxDate.getMonth() - numMonths[1] + 1, maxDate.getDate()));
1286	maxDraw = (minDate && maxDraw < minDate ? minDate : maxDraw);
1287	while (this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1)) > maxDraw) {
1288	drawMonth--;
1289	if (drawMonth < 0) {
1290	drawMonth = 11;
1291	drawYear--;
1292	}
1293	}
1294	}
1295	inst.drawMonth = drawMonth;
1296	inst.drawYear = drawYear;
1297	var prevText = this._get(inst, 'prevText');
1298	prevText = (!navigationAsDateFormat ? prevText : this.formatDate(prevText,
1299	this._daylightSavingAdjust(new Date(drawYear, drawMonth - stepMonths, 1)),
1300	this._getFormatConfig(inst)));
1301	var prev = (this._canAdjustMonth(inst, -1, drawYear, drawMonth) ?
1302	'<a class="ui-datepicker-prev ui-corner-all" onclick="DP_jQuery.datepicker._adjustDate(\'#' + inst.id + '\', -' + stepMonths + ', \'M\');"' +
1303	' title="' + prevText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'e' : 'w') + '">' + prevText + '</span></a>' :
1304	(hideIfNoPrevNext ? '' : '<a class="ui-datepicker-prev ui-corner-all ui-state-disabled" title="'+ prevText +'"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'e' : 'w') + '">' + prevText + '</span></a>'));
1305	var nextText = this._get(inst, 'nextText');
1306	nextText = (!navigationAsDateFormat ? nextText : this.formatDate(nextText,
1307	this._daylightSavingAdjust(new Date(drawYear, drawMonth + stepMonths, 1)),
1308	this._getFormatConfig(inst)));
1309	var next = (this._canAdjustMonth(inst, +1, drawYear, drawMonth) ?
1310	'<a class="ui-datepicker-next ui-corner-all" onclick="DP_jQuery.datepicker._adjustDate(\'#' + inst.id + '\', +' + stepMonths + ', \'M\');"' +
1311	' title="' + nextText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'w' : 'e') + '">' + nextText + '</span></a>' :
1312	(hideIfNoPrevNext ? '' : '<a class="ui-datepicker-next ui-corner-all ui-state-disabled" title="'+ nextText + '"><span class="ui-icon ui-icon-circle-triangle-' + ( isRTL ? 'w' : 'e') + '">' + nextText + '</span></a>'));
1313	var currentText = this._get(inst, 'currentText');
1314	var gotoDate = (this._get(inst, 'gotoCurrent') && inst.currentDay ? currentDate : today);
1315	currentText = (!navigationAsDateFormat ? currentText :
1316	this.formatDate(currentText, gotoDate, this._getFormatConfig(inst)));
1317	var controls = (!inst.inline ? '<button type="button" class="ui-datepicker-close ui-state-default ui-priority-primary ui-corner-all" onclick="DP_jQuery.datepicker._hideDatepicker();">' + this._get(inst, 'closeText') + '</button>' : '');
1318	var buttonPanel = (showButtonPanel) ? '<div class="ui-datepicker-buttonpane ui-widget-content">' + (isRTL ? controls : '') +
1319	(this._isInRange(inst, gotoDate) ? '<button type="button" class="ui-datepicker-current ui-state-default ui-priority-secondary ui-corner-all" onclick="DP_jQuery.datepicker._gotoToday(\'#' + inst.id + '\');"' +
1320	'>' + currentText + '</button>' : '') + (isRTL ? '' : controls) + '</div>' : '';
1321	var firstDay = parseInt(this._get(inst, 'firstDay'),10);
1322	firstDay = (isNaN(firstDay) ? 0 : firstDay);
1323	var dayNames = this._get(inst, 'dayNames');
1324	var dayNamesShort = this._get(inst, 'dayNamesShort');
1325	var dayNamesMin = this._get(inst, 'dayNamesMin');
1326	var monthNames = this._get(inst, 'monthNames');
1327	var monthNamesShort = this._get(inst, 'monthNamesShort');
1328	var beforeShowDay = this._get(inst, 'beforeShowDay');
1329	var showOtherMonths = this._get(inst, 'showOtherMonths');
1330	var calculateWeek = this._get(inst, 'calculateWeek') \|\| this.iso8601Week;
1331	var endDate = inst.endDay ? this._daylightSavingAdjust(
1332	new Date(inst.endYear, inst.endMonth, inst.endDay)) : currentDate;
1333	var defaultDate = this._getDefaultDate(inst);
1334	var html = '';
1335	for (var row = 0; row < numMonths[0]; row++) {
1336	var group = '';
1337	for (var col = 0; col < numMonths[1]; col++) {
1338	var selectedDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, inst.selectedDay));
1339	var cornerClass = ' ui-corner-all';
1340	var calender = '';
1341	if (isMultiMonth) {
1342	calender += '<div class="ui-datepicker-group ui-datepicker-group-';
1343	switch (col) {
1344	case 0: calender += 'first'; cornerClass = ' ui-corner-' + (isRTL ? 'right' : 'left'); break;
1345	case numMonths[1]-1: calender += 'last'; cornerClass = ' ui-corner-' + (isRTL ? 'left' : 'right'); break;
1346	default: calender += 'middle'; cornerClass = ''; break;
1347	}
1348	calender += '">';
1349	}
1350	calender += '<div class="ui-datepicker-header ui-widget-header ui-helper-clearfix' + cornerClass + '">' +
1351	(/all\|left/.test(cornerClass) && row == 0 ? (isRTL ? next : prev) : '') +
1352	(/all\|right/.test(cornerClass) && row == 0 ? (isRTL ? prev : next) : '') +
1353	this._generateMonthYearHeader(inst, drawMonth, drawYear, minDate, maxDate,
1354	selectedDate, row > 0 \|\| col > 0, monthNames, monthNamesShort) + // draw month headers
1355	'</div><table class="ui-datepicker-calendar"><thead>' +
1356	'<tr>';
1357	var thead = '';
1358	for (var dow = 0; dow < 7; dow++) { // days of the week
1359	var day = (dow + firstDay) % 7;
1360	thead += '<th' + ((dow + firstDay + 6) % 7 >= 5 ? ' class="ui-datepicker-week-end"' : '') + '>' +
1361	'<span title="' + dayNames[day] + '">' + dayNamesMin[day] + '</span></th>';
1362	}
1363	calender += thead + '</tr></thead><tbody>';
1364	var daysInMonth = this._getDaysInMonth(drawYear, drawMonth);
1365	if (drawYear == inst.selectedYear && drawMonth == inst.selectedMonth)
1366	inst.selectedDay = Math.min(inst.selectedDay, daysInMonth);
1367	var leadDays = (this._getFirstDayOfMonth(drawYear, drawMonth) - firstDay + 7) % 7;
1368	var numRows = (isMultiMonth ? 6 : Math.ceil((leadDays + daysInMonth) / 7)); // calculate the number of rows to generate
1369	var printDate = this._daylightSavingAdjust(new Date(drawYear, drawMonth, 1 - leadDays));
1370	for (var dRow = 0; dRow < numRows; dRow++) { // create date picker rows
1371	calender += '<tr>';
1372	var tbody = '';
1373	for (var dow = 0; dow < 7; dow++) { // create date picker days
1374	var daySettings = (beforeShowDay ?
1375	beforeShowDay.apply((inst.input ? inst.input[0] : null), [printDate]) : [true, '']);
1376	var otherMonth = (printDate.getMonth() != drawMonth);
1377	var unselectable = otherMonth \|\| !daySettings[0] \|\|
1378	(minDate && printDate < minDate) \|\| (maxDate && printDate > maxDate);
1379	tbody += '<td class="' +
1380	((dow + firstDay + 6) % 7 >= 5 ? ' ui-datepicker-week-end' : '') + // highlight weekends
1381	(otherMonth ? ' ui-datepicker-other-month' : '') + // highlight days from other months
1382	((printDate.getTime() == selectedDate.getTime() && drawMonth == inst.selectedMonth && inst._keyEvent) \|\| // user pressed key
1383	(defaultDate.getTime() == printDate.getTime() && defaultDate.getTime() == selectedDate.getTime()) ?
1384	// or defaultDate is current printedDate and defaultDate is selectedDate
1385	' ' + this._dayOverClass : '') + // highlight selected day
1386	(unselectable ? ' ' + this._unselectableClass + ' ui-state-disabled': '') + // highlight unselectable days
1387	(otherMonth && !showOtherMonths ? '' : ' ' + daySettings[1] + // highlight custom dates
1388	(printDate.getTime() >= currentDate.getTime() && printDate.getTime() <= endDate.getTime() ? // in current range
1389	' ' + this._currentClass : '') + // highlight selected day
1390	(printDate.getTime() == today.getTime() ? ' ui-datepicker-today' : '')) + '"' + // highlight today (if different)
1391	((!otherMonth \|\| showOtherMonths) && daySettings[2] ? ' title="' + daySettings[2] + '"' : '') + // cell title
1392	(unselectable ? '' : ' onclick="DP_jQuery.datepicker._selectDay(\'#' +
1393	inst.id + '\',' + drawMonth + ',' + drawYear + ', this);return false;"') + '>' + // actions
1394	(otherMonth ? (showOtherMonths ? printDate.getDate() : ' ') : // display for other months
1395	(unselectable ? '<span class="ui-state-default">' + printDate.getDate() + '</span>' : '<a class="ui-state-default' +
1396	(printDate.getTime() == today.getTime() ? ' ui-state-highlight' : '') +
1397	(printDate.getTime() >= currentDate.getTime() && printDate.getTime() <= endDate.getTime() ? // in current range
1398	' ui-state-active' : '') + // highlight selected day
1399	'" href="#">' + printDate.getDate() + '</a>')) + '</td>'; // display for this month
1400	printDate.setDate(printDate.getDate() + 1);
1401	printDate = this._daylightSavingAdjust(printDate);
1402	}
1403	calender += tbody + '</tr>';
1404	}
1405	drawMonth++;
1406	if (drawMonth > 11) {
1407	drawMonth = 0;
1408	drawYear++;
1409	}
1410	calender += '</tbody></table>' + (isMultiMonth ? '</div>' +
1411	((numMonths[0] > 0 && col == numMonths[1]-1) ? '<div class="ui-datepicker-row-break"></div>' : '') : '');
1412	group += calender;
1413	}
1414	html += group;
1415	}
1416	html += buttonPanel + ($.browser.msie && parseInt($.browser.version,10) < 7 && !inst.inline ?
1417	'<iframe src="javascript:false;" class="ui-datepicker-cover" frameborder="0"></iframe>' : '');
1418	inst._keyEvent = false;
1419	return html;
1420	},
1421
1422	/* Generate the month and year header. */
1423	_generateMonthYearHeader: function(inst, drawMonth, drawYear, minDate, maxDate,
1424	selectedDate, secondary, monthNames, monthNamesShort) {
1425	minDate = (inst.rangeStart && minDate && selectedDate < minDate ? selectedDate : minDate);
1426	var changeMonth = this._get(inst, 'changeMonth');
1427	var changeYear = this._get(inst, 'changeYear');
1428	var showMonthAfterYear = this._get(inst, 'showMonthAfterYear');
1429	var html = '<div class="ui-datepicker-title">';
1430	var monthHtml = '';
1431	// month selection
1432	if (secondary \|\| !changeMonth)
1433	monthHtml += '<span class="ui-datepicker-month">' + monthNames[drawMonth] + '</span> ';
1434	else {
1435	var inMinYear = (minDate && minDate.getFullYear() == drawYear);
1436	var inMaxYear = (maxDate && maxDate.getFullYear() == drawYear);
1437	monthHtml += '<select class="ui-datepicker-month" ' +
1438	'onchange="DP_jQuery.datepicker._selectMonthYear(\'#' + inst.id + '\', this, \'M\');" ' +
1439	'onclick="DP_jQuery.datepicker._clickMonthYear(\'#' + inst.id + '\');"' +
1440	'>';
1441	for (var month = 0; month < 12; month++) {
1442	if ((!inMinYear \|\| month >= minDate.getMonth()) &&
1443	(!inMaxYear \|\| month <= maxDate.getMonth()))
1444	monthHtml += '<option value="' + month + '"' +
1445	(month == drawMonth ? ' selected="selected"' : '') +
1446	'>' + monthNamesShort[month] + '</option>';
1447	}
1448	monthHtml += '</select>';
1449	}
1450	if (!showMonthAfterYear)
1451	html += monthHtml + ((secondary \|\| changeMonth \|\| changeYear) && (!(changeMonth && changeYear)) ? ' ' : '');
1452	// year selection
1453	if (secondary \|\| !changeYear)
1454	html += '<span class="ui-datepicker-year">' + drawYear + '</span>';
1455	else {
1456	// determine range of years to display
1457	var years = this._get(inst, 'yearRange').split(':');
1458	var year = 0;
1459	var endYear = 0;
1460	if (years.length != 2) {
1461	year = drawYear - 10;
1462	endYear = drawYear + 10;
1463	} else if (years[0].charAt(0) == '+' \|\| years[0].charAt(0) == '-') {
1464	year = drawYear + parseInt(years[0], 10);
1465	endYear = drawYear + parseInt(years[1], 10);
1466	} else {
1467	year = parseInt(years[0], 10);
1468	endYear = parseInt(years[1], 10);
1469	}
1470	year = (minDate ? Math.max(year, minDate.getFullYear()) : year);
1471	endYear = (maxDate ? Math.min(endYear, maxDate.getFullYear()) : endYear);
1472	html += '<select class="ui-datepicker-year" ' +
1473	'onchange="DP_jQuery.datepicker._selectMonthYear(\'#' + inst.id + '\', this, \'Y\');" ' +
1474	'onclick="DP_jQuery.datepicker._clickMonthYear(\'#' + inst.id + '\');"' +
1475	'>';
1476	for (; year <= endYear; year++) {
1477	html += '<option value="' + year + '"' +
1478	(year == drawYear ? ' selected="selected"' : '') +
1479	'>' + year + '</option>';
1480	}
1481	html += '</select>';
1482	}
1483	if (showMonthAfterYear)
1484	html += (secondary \|\| changeMonth \|\| changeYear ? ' ' : '') + monthHtml;
1485	html += '</div>'; // Close datepicker_header
1486	return html;
1487	},
1488
1489	/* Adjust one of the date sub-fields. */
1490	_adjustInstDate: function(inst, offset, period) {
1491	var year = inst.drawYear + (period == 'Y' ? offset : 0);
1492	var month = inst.drawMonth + (period == 'M' ? offset : 0);
1493	var day = Math.min(inst.selectedDay, this._getDaysInMonth(year, month)) +
1494	(period == 'D' ? offset : 0);
1495	var date = this._daylightSavingAdjust(new Date(year, month, day));
1496	// ensure it is within the bounds set
1497	var minDate = this._getMinMaxDate(inst, 'min', true);
1498	var maxDate = this._getMinMaxDate(inst, 'max');
1499	date = (minDate && date < minDate ? minDate : date);
1500	date = (maxDate && date > maxDate ? maxDate : date);
1501	inst.selectedDay = date.getDate();
1502	inst.drawMonth = inst.selectedMonth = date.getMonth();
1503	inst.drawYear = inst.selectedYear = date.getFullYear();
1504	if (period == 'M' \|\| period == 'Y')
1505	this._notifyChange(inst);
1506	},
1507
1508	/* Notify change of month/year. */
1509	_notifyChange: function(inst) {
1510	var onChange = this._get(inst, 'onChangeMonthYear');
1511	if (onChange)
1512	onChange.apply((inst.input ? inst.input[0] : null),
1513	[inst.selectedYear, inst.selectedMonth + 1, inst]);
1514	},
1515
1516	/* Determine the number of months to show. */
1517	_getNumberOfMonths: function(inst) {
1518	var numMonths = this._get(inst, 'numberOfMonths');
1519	return (numMonths == null ? [1, 1] : (typeof numMonths == 'number' ? [1, numMonths] : numMonths));
1520	},
1521
1522	/* Determine the current maximum date - ensure no time components are set - may be overridden for a range. */
1523	_getMinMaxDate: function(inst, minMax, checkRange) {
1524	var date = this._determineDate(this._get(inst, minMax + 'Date'), null);
1525	return (!checkRange \|\| !inst.rangeStart ? date :
1526	(!date \|\| inst.rangeStart > date ? inst.rangeStart : date));
1527	},
1528
1529	/* Find the number of days in a given month. */
1530	_getDaysInMonth: function(year, month) {
1531	return 32 - new Date(year, month, 32).getDate();
1532	},
1533
1534	/* Find the day of the week of the first of a month. */
1535	_getFirstDayOfMonth: function(year, month) {
1536	return new Date(year, month, 1).getDay();
1537	},
1538
1539	/* Determines if we should allow a "next/prev" month display change. */
1540	_canAdjustMonth: function(inst, offset, curYear, curMonth) {
1541	var numMonths = this._getNumberOfMonths(inst);
1542	var date = this._daylightSavingAdjust(new Date(
1543	curYear, curMonth + (offset < 0 ? offset : numMonths[1]), 1));
1544	if (offset < 0)
1545	date.setDate(this._getDaysInMonth(date.getFullYear(), date.getMonth()));
1546	return this._isInRange(inst, date);
1547	},
1548
1549	/* Is the given date in the accepted range? */
1550	_isInRange: function(inst, date) {
1551	// during range selection, use minimum of selected date and range start
1552	var newMinDate = (!inst.rangeStart ? null : this._daylightSavingAdjust(
1553	new Date(inst.selectedYear, inst.selectedMonth, inst.selectedDay)));
1554	newMinDate = (newMinDate && inst.rangeStart < newMinDate ? inst.rangeStart : newMinDate);
1555	var minDate = newMinDate \|\| this._getMinMaxDate(inst, 'min');
1556	var maxDate = this._getMinMaxDate(inst, 'max');
1557	return ((!minDate \|\| date >= minDate) && (!maxDate \|\| date <= maxDate));
1558	},
1559
1560	/* Provide the configuration settings for formatting/parsing. */
1561	_getFormatConfig: function(inst) {
1562	var shortYearCutoff = this._get(inst, 'shortYearCutoff');
1563	shortYearCutoff = (typeof shortYearCutoff != 'string' ? shortYearCutoff :
1564	new Date().getFullYear() % 100 + parseInt(shortYearCutoff, 10));
1565	return {shortYearCutoff: shortYearCutoff,
1566	dayNamesShort: this._get(inst, 'dayNamesShort'), dayNames: this._get(inst, 'dayNames'),
1567	monthNamesShort: this._get(inst, 'monthNamesShort'), monthNames: this._get(inst, 'monthNames')};
1568	},
1569
1570	/* Format the given date for display. */
1571	_formatDate: function(inst, day, month, year) {
1572	if (!day) {
1573	inst.currentDay = inst.selectedDay;
1574	inst.currentMonth = inst.selectedMonth;
1575	inst.currentYear = inst.selectedYear;
1576	}
1577	var date = (day ? (typeof day == 'object' ? day :
1578	this._daylightSavingAdjust(new Date(year, month, day))) :
1579	this._daylightSavingAdjust(new Date(inst.currentYear, inst.currentMonth, inst.currentDay)));
1580	return this.formatDate(this._get(inst, 'dateFormat'), date, this._getFormatConfig(inst));
1581	}
1582	});
1583
1584	/* jQuery extend now ignores nulls! */
1585	function extendRemove(target, props) {
1586	$.extend(target, props);
1587	for (var name in props)
1588	if (props[name] == null \|\| props[name] == undefined)
1589	target[name] = props[name];
1590	return target;
1591	};
1592
1593	/* Determine whether an object is an array. */
1594	function isArray(a) {
1595	return (a && (($.browser.safari && typeof a == 'object' && a.length) \|\|
1596	(a.constructor && a.constructor.toString().match(/\Array\(\)/))));
1597	};
1598
1599	/* Invoke the datepicker functionality.
1600	@param options string - a command, optionally followed by additional parameters or
1601	Object - settings for attaching new datepicker functionality
1602	@return jQuery object */
1603	$.fn.datepicker = function(options){
1604
1605	/* Initialise the date picker. */
1606	if (!$.datepicker.initialized) {
1607	$(document).mousedown($.datepicker._checkExternalClick).
1608	find('body').append($.datepicker.dpDiv);
1609	$.datepicker.initialized = true;
1610	}
1611
1612	var otherArgs = Array.prototype.slice.call(arguments, 1);
1613	if (typeof options == 'string' && (options == 'isDisabled' \|\| options == 'getDate'))
1614	return $.datepicker['_' + options + 'Datepicker'].
1615	apply($.datepicker, [this[0]].concat(otherArgs));
1616	if (options == 'option' && arguments.length == 2 && typeof arguments[1] == 'string')
1617	return $.datepicker['_' + options + 'Datepicker'].
1618	apply($.datepicker, [this[0]].concat(otherArgs));
1619	return this.each(function() {
1620	typeof options == 'string' ?
1621	$.datepicker['_' + options + 'Datepicker'].
1622	apply($.datepicker, [this].concat(otherArgs)) :
1623	$.datepicker._attachDatepicker(this, options);
1624	});
1625	};
1626
1627	$.datepicker = new Datepicker(); // singleton instance
1628	$.datepicker.initialized = false;
1629	$.datepicker.uuid = new Date().getTime();
1630	$.datepicker.version = "1.7.2";
1631
1632	// Workaround for #4055
1633	// Add another global to avoid noConflict issues with inline event handlers
1634	window.DP_jQuery = $;
1635
1636	})(jQuery);

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